JPS6142102Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a joint mounting device capable of maintaining a uniform mounting state of a joint used in a leak test of a heat exchanger.

Prior Art A joint equipped with a temporary fixing lever is used for leak testing of heat exchangers. This joint is inserted into the fluid inlet/output pipe of the heat exchanger, is temporarily fixed there by swinging a lever, and is used for filling and collecting gas for leak testing and for detecting filling pressure. The specific structure of this joint is shown in Utility Model Application Publication No. 1758-1983,
To explain this using Figure 1, the joint main body a is provided with a tip b that is inserted into the inlet/outlet pipe of the heat exchanger, and an eccentric lever c that constitutes a cam mechanism that extends and retracts the tip b is located near the center. .

First and second gaskets d and e are provided on the outer circumferential surface of the tip, which tightly fit into the tube of the heat exchanger. Accordingly, a collet edge f is formed whose outer diameter is expanded. When the collector edge f is expanded, it comes into pressure contact with the inside of the tube of the heat exchanger, thereby sealingly fixing the joint tip b. However, although this joint installation work is simple, it has had to rely on skilled hands because of the requirement for uniformity of the installation state. For this reason, this has become one of the keys to improving both workability and reliability in mass production processes.

Problems that the invention aims to solve This invention was created in consideration of these points, and its purpose is to promote labor-saving and uniformity of the joint installation work by mechanizing the joint installation work as much as possible. In addition, it is an object of the present invention to provide a joint mounting device that can be replaced by a machine for simple work.

Structure of the invention Means for solving the problem The joint mounting device of the invention includes a lift member that lifts the joint to a predetermined position, a grip member that grips one end of the joint lifted by the lift member, and a grip member that grips the other end of the joint. a first sliding member that moves the joint closer to the fluid inlet/outlet pipe inlet of the heat exchanger while being held by the holding member; and a second sliding member that inserts the joint with the holding member removed deep into the fluid inlet/outlet pipe. The sliding member, the swinging member that swings the temporary fixing lever attached to the joint, and the device head to which the above-mentioned gripping member and swinging member are attached are installed so that the joint can be rotated. It is equipped with a joint posture heat changing member that can be changed depending on the position.

Function: In the joint mounting device of the present invention, the joint is raised to a predetermined height using the lift member, the gripping member is inserted and gripped at the end of the joint, the swinging member is engaged with the lever of the joint, and the tip side of the joint is held by the holding member. After supporting it, lower the lift member, then use the first sliding member to bring the joint tip into contact with the inlet of the heat exchanger inlet/outlet pipe, remove the holding member, and then insert the joint into the heat exchanger inlet/outlet pipe,
Next, the joint lever is pulled by the swinging member to fix the joint, the engagement of the swinging member is released, and the gripping member is removed to perform mounting.

Further, the attitude of the mounting head is adjusted in advance by rotating it using a joint attitude changing member depending on the position of the heat exchanger inlet/outlet pipe.

Embodiment A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, 1 is a joint, and a lever 2 for temporary fixation is swingably attached to the joint. A joint transfer 3 is installed to align and feed the joint 1 at a pitch of 25 mm. A lift member consisting of a lifter 4 and a first fluid cylinder 5 is provided near the bottom of the joint transfer shaft 3, and is adapted to lift the joint 1 from the transfer shaft 3 to a predetermined position. A gripping member consisting of a socket 6 and a second fluid cylinder 7 is installed above the lifter 4 in order to grip one end of the joint 1 lifted by the lifter 4. Also, lifter 4
A holding member consisting of a supporter 8 and a third fluid cylinder 9 is provided above the joint 1 to hold the other end of the joint 1. In order to swing the lever 2 of the joint 1 held in the socket 6, a lever with a hook 11 having a latch shape that engages with the lever 2 by the operation of the fourth fluid cylinder 10, and a lever with a hook 11 and a fourth fluid A swinging member is provided that includes a fifth fluid cylinder 12 that slides the cylinder 10 integrally.

Gripping members 6, 7 and swinging members 10, 11, 12
is attached to a mounting head 13, which is supported by a support frame 14 via a bearing 15, and furthermore, the mounting head 13 can be rotated and adjusted by a rotary actuator 16. Therefore, the posture of the joint 1 can be changed as appropriate.

The holding members 8 and 9 are attached and supported on the upper part of the support frame 14, and the support frame 14 itself is fixed to the upper surface of the double slide plate 17. That is, the support frame 14 can be slid in a fixed direction in stages by the operation of the sixth fluid cylinder 18 and the seventh fluid cylinder 19, and the sixth fluid cylinder 18 moves the joint 1 through heat exchange. The seventh fluid cylinder 19 also acts as a second sliding member for inserting the joint 1 into the fluid inlet/outlet pipe 21 .

The slide plate 17 is installed on the support frame 14, and the arm 2 is attached to one end of the lower surface of the support frame 14.
Lift members 4 and 5 are fixed via 2.
The support frame 14 itself is supported by two guide bars 23 so as to be movable in the front-rear direction, and can also be adjusted in the vertical direction with a height adjustment grip 24, and further can be adjusted in the left-right direction with a handle 25. possible to be installed. Therefore, the mounting head 13, the holding members 8, 9, the first sliding member 18, the second sliding member 1
9 and the lift members 4, 5, etc. can be moved up and down, front and back, left and right as a unit.

Next, the operation of the present invention will be described.

First, the joint 1 is placed in the joint transfer 3 in advance, and the heat exchanger 20 is transported to a predetermined location, positioned, and stopped.

Next, the first fluid cylinder 5 is actuated to raise the lifter 4, lifting the joint 1 upwardly from the joint transfer 3 and holding it in position in the socket 6. In this state, the second fluid cylinder 7
, the socket 6 is moved toward the joint 1 , one end of the joint 1 is inserted into the socket 6 , and the joint 1 is gripped by the socket 6 .

Next, the fourth fluid cylinder 10 is operated, and the hooked lever 11 is swung around its support shaft 11a from the state shown in FIGS.
As shown in Fig. 12, lever 2 of joint 1
engage the front side of the In addition, the third fluid cylinder 9
is held by the supporter 8.

Thereafter, the first fluid cylinder 5 is operated in the opposite direction to that described above, and the lifter 4 is lowered and returned to its original position.

In addition, if the lever 2 of the joint 1 is to be mounted on the heat exchanger 20 with the lever 2 facing upward, the mounting head 13 is rotated 180 degrees counterclockwise by the operation of the rotary actuator 16 to change the posture of the joint 1. .

Next, the sixth fluid cylinder 18 is activated to slide the joint 1 toward the fluid inlet/outlet pipe 21 of the heat exchanger 20 and bring it close to the inlet of the fluid inlet/outlet pipe 21, so that the tip of the joint 1 is inserted into the pipe 21. When the sixth fluid cylinder 18 is partially filled, the operation of the sixth fluid cylinder 18 is stopped. In this state, the third fluid cylinder 9 is operated in the opposite direction to that described above, swinging the supporter 8 to its original position, and releasing the supporter 8 from holding the joint 1.
Next, the seventh fluid cylinder 19 is operated to insert the joint 1 deep into the fluid inlet/output pipe 21 . Thereafter, the fifth fluid cylinder 12 is operated, and the fourth fluid cylinder 10 and the lever with hook 11 are slid in the direction shown by arrow B in FIG. 2, and the lever of the joint 1 is moved as shown in FIGS. The joint 1 is temporarily fixed within the tube 21 by rotating the joint 2 backward.

Next, by operating the fourth fluid cylinder 10 in the opposite direction to that described above, the hooked lever 11 is moved to the support shaft 1.
The joint 1 is swung away from the lever 2 about 1a to bring it into the state shown in FIG. 9 and disengage from the lever 2.

Also, the second fluid cylinder 7 is actuated in the opposite direction to that described above to separate the socket 6 from the joint 1. Further, the sixth and seventh fluid cylinders 18 and 19 are operated in the opposite direction to that described above, and the fifth fluid cylinder 12 is operated in the opposite direction to the arrow B, so that the slide plate 17, the lever with hook 11, etc. return to its original position. Note that when the rotary actuator 16 is activated, it is returned to the initial position by turning clockwise.

By repeating the above operations, it is possible to pick up the joint 1 and insert and attach it while taking the posture into consideration, just like a human hand.

Regarding the posture of the joint 1, in the case of the heat exchanger 20 as shown in FIGS. 5a and 5b, the lever 2 may be shifted by 180 degrees, but in the case of the heat exchanger 20 as shown in FIGS. The device 20 must be in such a state that the lever 2 does not interfere with the return bend 26. Lever 2 is return bend 2
This is because if it hits 6, it will interfere with the leak test.

Effects of the invention As is clear from the above explanation, according to the invention,
The joint installation work can be mechanized, and the joint installation state can be maintained uniformly. Therefore,
In addition to promoting labor savings, it has excellent effects such as improving productivity.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the joint mounting device according to the present invention, FIG. 2 is a front view of FIG. 1,
Figure 3 is the right side view of Figure 2, Figure 4 is A of Figure 2.
5 is a side view showing one embodiment of the joint mounting situation by the joint mounting device according to the present invention; FIG. 6 is a side view showing another embodiment of the joint mounting state according to the present invention. 7 is a side view showing still another embodiment of the joint mounting situation according to the present invention, FIG. 8 is a side view showing another embodiment of the joint mounting situation according to the present invention, and FIGS. 9 to 14 The figure is a diagram showing the related structure of the joint lever and the swinging member when the joint is installed according to the present invention, and FIGS. 9 and 10 are plane views showing the state before the swinging member is engaged with the joint lever. Figures 11 and 12 are a plan view and front view showing the state in which the swinging member is engaged with the front side of the joint lever, Figures 13 and 1.
Figure 4 is a plan view and a front view showing a state in which the joint lever is rotated and fixed by the swinging member after being attached to the heat exchanger entrance/exit;
The figure is a perspective view showing the appearance of a general joint. In the figure, 1 is a joint, 2 is a lever, 4 and 5 are lift members, 6 and 7 are gripping members, 8 and 9 are holding members, 10, 11, and 12 are swing members, 13 is a mounting head, and 18 is a 1 a sliding member, 19 a second sliding member, 20 a heat exchanger, and 21 a fluid inlet/outlet pipe.

Claims (1)

[Scope of utility model registration request] A means for attaching a joint for leak testing to a heat exchanger, which includes: a lift member that lifts the joint to a predetermined position; a grip member that grips one end of the joint lifted by the lift member; and a holder that holds the other end of the joint. a first sliding member that moves the joint closer to the fluid inlet/outlet pipe inlet of the heat exchanger while being held by the holding member, and a second sliding member that inserts the joint with the holding member removed all the way into the fluid inlet/outlet pipe. a swinging member that engages with a temporary fixing lever attached to the joint and swings the lever to fix the joint to the fluid inlet/output pipe; and a mounting head to which the gripping member and swinging member are attached. 1. A joint mounting device comprising: a joint position changing member which is rotatably installed so that the position of the joint can be changed according to the position of a fluid inlet/output pipe.